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tune up

tune up

 
See:
tune
part of speech: phrase
definition 1: to adjust (one or more musical instruments) to accurate or proper musical pitch.
We're not late; the orchestra is still tuning up.The soloist spent a good deal of time tuning up her instrument.
definition 2: to adjust (an engine, mechanism, or the like) so that it works properly.
Your car's engine isn't running as well as it could. We could tune it up for you today if you'd like.